<template>
  <div class="todo-header">
    <input
      type="text"
      @keyup.enter="publish"
      placeholder="请输入你的任务名称，按回车键确认"
    />
  </div>
</template>


<script>
export default {
  name: "Header",
  props: ["addTodo"],
  methods: {
    publish(e) {
      const newTode = { id: Date.now(), done: false, content: e.target.value.trim() };
      if(e.target.value.trim().length <=0){
        e.target.value=''
        return alert('请输入内容')
      }
      this.addTodo(newTode);
      e.target.value = ''
    },
  },
};
</script>


<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>